11025 Ball Bearing | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta ball bearing, part number 11025, used as a rotating support bearing within the driveline and engine assemblies of D4 and D6 series marine diesel engines and the DPI-A sterndrive. It is supplied as an individual bearing and is also included in the corresponding overhaul kit, making it a common replacement item during a full rebuild. Net weight is approximately 0.47 kg.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPI-A
• Volvo Penta D6-400A-G
• Volvo Penta D6-440A-G
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-320A-G
• Volvo Penta D4-300A-G

• Engine Family: D, DPI
• HP Range: 150-440 HP
• Year Range: Approximately 1960s onward

⚙️ Key Features

• OEM Volvo Penta part number 11025
• Included in the overhaul kit for the applicable assembly
• Net weight approximately 0.47 kg
• Fits D4 and D6 series marine diesel engines and the DPI-A sterndrive
• Genuine Volvo Penta component supplied to original specification
• Engine type: Volvo Penta marine diesel and petrol propulsion equipment

📋 Kit Contents

• Included in overhaul kit.

🔌 Function

The ball bearing supports a rotating shaft, carrying radial and thrust loads while allowing the shaft to turn with minimal friction. Correct bearing condition is essential to maintaining shaft alignment and smooth, quiet running of the assembly.

⚠️ Common Signs of Failure

• Growling, rumbling or whining noise that changes with shaft speed
• Excessive play, rough rotation or notchy feel when turning the shaft by hand
• Vibration transmitted through the housing or driveline under load
• Overheating or discoloured bearing surfaces and grease breakdown
• Metallic debris or bearing particles found in the oil or housing during inspection

🛠️ Service Notes

• Work clean — leave the bearing in its wrapping until the moment it goes in, and do not wash the preservative out or blow it dry with compressed air
• Apply the fitting force only to the ring being fitted, through a tube or drift that bears on that ring alone; force pushed through the balls from one ring to the other dents the raceways and the bearing will be noisy and short-lived from the first run
• Where the fit calls for it, expand the inner ring with even, controlled heat rather than driving it on, and never heat a bearing with a flame or beyond the temperature given in the workshop manual for your engine
• Check the shaft and housing seats before fitting — scoring, burrs, corrosion or a worn seat will ruin a new bearing, and fretting marks mean the seat itself needs attention
• Fit the bearing square and fully home against its shoulder, note which way round any sealed, shielded or marked face must go, and lubricate with the grease or oil specified for the application before it is turned under load

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Related TAMD162 / TAMD165 seawater-pump overhaul component

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging